[Backgroundrb-devel] "tailing" a running system command?

[mattp at digimonkey.com]

Dunno if anyone saw the short question at the end of my last thread,  
so i'm reposting in a thread with the appropriate subject:

Here's what I need to do --

Run a system-level command like 'ping -t www.google.com' and have it  
periodically update a <div> with the command's ouput.  Is this possible?

(the trick here is that I want *periodic* updates of the div... i want  
to see incremental output as 'ping' is running, just like if I were  
looking at console...)